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Question

What is the length of side of a square, if the area of square is 441 cm2?

A
39 cm
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B
31 cm
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C
29 cm
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D
21 cm
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Solution

The correct option is D 21 cm

Area of a square = 441 cm2

We know that;

Area of a square = side2

441 = side2

Side = <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> 441 = 21

Therefore, length of side of square is 21 cm.


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